00289nam a2200109Ia 450000500170000000800410001708200160005810000210007424500340009526000420012930000080017120260225050903.0260224s9999||||xx |||||||||||||| ||und||  a581.135 LEO  aA. Carl Leopold  0aPlant growth and development   aNew York: McGraw-Hill Book Co. c1964  a466